Patents by Inventor Walter Harper

Walter Harper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the generation of peroxyacids
    Patent number: 5141731
    Abstract: A process and an apparatus are described for the production of peroxyacids from concentrated solutions of hydrogen peroxide and an oxyacid. The total amount of concentrated hydrogen peroxide is divided into at least two portions which are added separately in series to the concentrated oxyacid.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: August 25, 1992
    Assignee: Degussa Aktiengesellschaft
    Inventors: Juergen Meier, Gerhard Arnold, Ron Choiniere, Uwe Wagenknecht, Paul Reynolds, Walter Harper